Jeremy Custenborder created KAFKA-5620:
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Summary: SerializationException in doSend() masks class cast
exception
Key: KAFKA-5620
URL: https://issues.apache.org/jira/browse/KAFKA-5620
Project: Kafka
Issue Type: Bug
Affects Versions: 0.11.0.0
Reporter: Jeremy Custenborder
Assignee: Jeremy Custenborder
I misconfigured my Serializer and passed a byte array to BytesSerializer. This
caused the following exception to be thrown.
{code}
org.apache.kafka.common.errors.SerializationException: Can't convert value of
class [B to class org.apache.kafka.common.serialization.BytesSerializer
specified in value.serializer
{code}
This doesn't provide much detail because it strips the ClassCastException. It
made figuring this out much more difficult. The real value was the inner
exception which was:
{code}
[B cannot be cast to org.apache.kafka.common.utils.Bytes
{code}
We should include the ClassCastException.
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